流向涡管存在拉伸和变形。
根据涡管定义，穿过涡管管壁的涡量为零。
The flux through the wall of the vortex tube is zero by its definition.
发现沿切变线走向有一条中尺度涡管，位于对流层中低层，高度呈波状起伏。
The results showed that there was a mesoscale vortex tube along the mesoscale shear line on the middle low troposphere, and its altitude varied in a wave shape.
进入涡管槽口的挟沙水流会形成强有力的螺旋流沿涡管流动，能有效地排除底部推移质泥沙。
The flow with sediment trapped by the slit of the vortex tube can form vortex inside the tube and exclude efficiently the coarse sediment near the bed layer in front of the tube.
结果显示：涡管流函数是时间的周期函数，并被表征为一系列在涡核内均匀分布螺旋涡丝流函数的叠加。
The result showed that the stream function of vortex tube was expressed as the superposition of the stream functions of vortex filament within the vortex core.
为某微型涡喷发动机设计了一个蒸发管环形燃烧室。
An annular combustor with evaporation tubes was designed for certain micro-turbojet engine.
其结果表明，管跨的同向涡激振动一般不会对管线系统的正常运行构成威胁，而管跨的横向共振则必须予以消除。
The results show that in line vibration can not bring serious danger to submarine pipeline system in most cases, while cross flow vibration must be eliminated.
该模型的计算结果表明，立管的模态振型、模态频率与涡激振动响应高度耦合，并且对于低质量比的情况尤为明显。
It shows that the modal shape and mode frequency are highly coupled with the VIV response of a Marine riser with low mass ratio.
海底管跨的涡激振动是引发管跨共振失效的主要因素。
Vortex induced vibration of submarine pipeline span is the major factor of resonance invalidation of pipeline.
将纵向涡强化换热技术应用于矩形管槽，研究以水为换热介质在过渡流状态下的换热效果。
Heat transfer in rectangular pipe with longitudinal vortex generators were investigated under transitional flow using water as working fluid.
从管跨的可靠性分析中看出，由海浪和海流引起的涡激振动是破坏管跨的主要因素之一。
From the reliability analysis of span, vortex-induced vibration resulting from ocean wave and current is one of primary destroy factors.
本文应用湍流大涡模拟方法对三维空间的弯管流进行了数值模拟。
The numerical simulation for a three-dimensional curved duct flow was carried out by means of the large eddy simulation (LES).
本发明提供一种采用涡强化管增强潜热型功能热流体传热能力的方法和涡强化管。
The invention provides a method for enhancing the heat transfer capacity of latent heat type functionally thermal fluid by adopting a vortex enhanced tube and the vortex enhanced tube.
管跨结构的涡激振动分析是海底管线疲劳分析和安全评价的重要环节。
Vortex induced vibration of submarine pipeline span is the major factor of resonance invalidation of pipeline.
该文利用大涡模拟，对可压缩流体绕经安装在方管底部的长方体和矩形体的绕流现象进行了三维数值模拟。
The large eddy simulation is applied to simulate a 3-d square channel compressible flow around a wall-mounted rectangle cylinder.
以空气和水为介质，以三角柱为旋涡发生体，在内径为50mm的水平管和垂直上升管中分别进行实验，分析雷诺数和体积含气率对气液两相流涡街稳定性的影响。
Experiments were performed in horizontal and vertical conduits with diameter of 50 mm respectively, adopting air and water as flow media and a triangular prism as the vortex-forming body.
以空气和水为介质，以三角柱为旋涡发生体，在内径为50mm的水平管和垂直上升管中分别进行实验，分析雷诺数和体积含气率对气液两相流涡街稳定性的影响。
Experiments were performed in horizontal and vertical conduits with diameter of 50 mm respectively, adopting air and water as flow media and a triangular prism as the vortex-forming body.
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